diff options
Diffstat (limited to 'cpu/mpc85xx/fdt.c')
| -rw-r--r-- | cpu/mpc85xx/fdt.c | 73 |
1 files changed, 65 insertions, 8 deletions
diff --git a/cpu/mpc85xx/fdt.c b/cpu/mpc85xx/fdt.c index 1fae47c..26a8f48 100644 --- a/cpu/mpc85xx/fdt.c +++ b/cpu/mpc85xx/fdt.c @@ -39,13 +39,8 @@ void ft_fixup_cpu(void *blob, u64 memory_limit) { int off; ulong spin_tbl_addr = get_spin_addr(); - u32 bootpg, id = get_my_id(); - - /* if we have 4G or more of memory, put the boot page at 4Gb-4k */ - if ((u64)gd->ram_size > 0xfffff000) - bootpg = 0xfffff000; - else - bootpg = gd->ram_size - 4096; + u32 bootpg = determine_mp_bootpg(); + u32 id = get_my_id(); off = fdt_node_offset_by_prop_value(blob, -1, "device_type", "cpu", 4); while (off != -FDT_ERR_NOTFOUND) { @@ -80,7 +75,9 @@ void ft_fixup_cpu(void *blob, u64 memory_limit) } #endif -#ifdef CONFIG_L2_CACHE +#define ft_fixup_l3cache(x, y) + +#if defined(CONFIG_L2_CACHE) /* return size in kilobytes */ static inline u32 l2cache_size(void) { @@ -157,6 +154,66 @@ static inline void ft_fixup_l2cache(void *blob) fdt_setprop_cell(blob, off, "cache-sets", num_sets); fdt_setprop_cell(blob, off, "cache-level", 2); fdt_setprop(blob, off, "compatible", compat_buf, sizeof(compat_buf)); + + /* we dont bother w/L3 since no platform of this type has one */ +} +#elif defined(CONFIG_BACKSIDE_L2_CACHE) +static inline void ft_fixup_l2cache(void *blob) +{ + int off, l2_off, l3_off = -1; + u32 *ph; + u32 l2cfg0 = mfspr(SPRN_L2CFG0); + u32 size, line_size, num_ways, num_sets; + + size = (l2cfg0 & 0x3fff) * 64 * 1024; + num_ways = ((l2cfg0 >> 14) & 0x1f) + 1; + line_size = (((l2cfg0 >> 23) & 0x3) + 1) * 32; + num_sets = size / (line_size * num_ways); + + off = fdt_node_offset_by_prop_value(blob, -1, "device_type", "cpu", 4); + + while (off != -FDT_ERR_NOTFOUND) { + ph = (u32 *)fdt_getprop(blob, off, "next-level-cache", 0); + + if (ph == NULL) { + debug("no next-level-cache property\n"); + goto next; + } + + l2_off = fdt_node_offset_by_phandle(blob, *ph); + if (l2_off < 0) { + printf("%s: %s\n", __func__, fdt_strerror(off)); + goto next; + } + + fdt_setprop(blob, l2_off, "cache-unified", NULL, 0); + fdt_setprop_cell(blob, l2_off, "cache-block-size", line_size); + fdt_setprop_cell(blob, l2_off, "cache-size", size); + fdt_setprop_cell(blob, l2_off, "cache-sets", num_sets); + fdt_setprop_cell(blob, l2_off, "cache-level", 2); + fdt_setprop(blob, l2_off, "compatible", "cache", 6); + + if (l3_off < 0) { + ph = (u32 *)fdt_getprop(blob, l2_off, "next-level-cache", 0); + + if (ph == NULL) { + debug("no next-level-cache property\n"); + goto next; + } + l3_off = *ph; + } +next: + off = fdt_node_offset_by_prop_value(blob, off, + "device_type", "cpu", 4); + } + if (l3_off > 0) { + l3_off = fdt_node_offset_by_phandle(blob, l3_off); + if (l3_off < 0) { + printf("%s: %s\n", __func__, fdt_strerror(off)); + return ; + } + ft_fixup_l3cache(blob, l3_off); + } } #else #define ft_fixup_l2cache(x) |